Which airlines fly to Missouri?

Air Canada, United Airlines and WestJet are the top three most popular airlines that fly to Missouri from Region of Ontario according to our data. Air Canada is the first choice among our users, with 45% of people opting to fly with this airline when travelling to Missouri. Keep in mind that there are 5 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Missouri?

American Airlines, Delta, and United Airlines are the most popular carriers operating from Ontario to Missouri

How many flights depart from Region of Ontario to Missouri on average per week?

2 flights are operational weekly from Region of Ontario to Missouri as of November 2026. The most popular departure day for this route is Wed, with 100% of flights per week taking off on this day.

How long is the flight from Region of Ontario to Missouri?

The average flight duration from Region of Ontario to Missouri depends on which airport you fly into and out of. Flying from Toronto to St. Louis is 2h 16m on average, while flying from Ottawa to St. Louis is 5h 22m on average. St. Louis is the most popular airport in Missouri.

When did momondo last update prices for flights from Ontario to Missouri?

Prices for flights from Ontario to Missouri are refreshed on a daily basis.

How many operators does momondo search for flights from Ontario to Missouri?

There are 5 operators available for flights from Ontario to Missouri as of November 2026.

How old do you have to be to fly from Ontario to Missouri?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Missouri.

What documentation or ID do you need to fly to Missouri?

The necessary travel and health documents for your Missouri trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 338 Cheap Flights from Ontario to Missouri in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Missouri

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:35 a.m. - 3:59 p.m.YYZ Toronto Pearson Intl-MCI Kansas City

9h 24m1 stop Fort Lauderdale

4:49 p.m. - 3:20 p.m.MCI Kansas City-YYZ Toronto Pearson Intl

21h 31m1 stop Fort Lauderdale

C$ 482Multiple Airlines

Mon, 7 Dec - Mon, 14 Dec

9:35 a.m. - 12:12 a.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

15h 37m1 stop Orlando

6:20 p.m. - 1:40 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

18h 20m1 stop Orlando

C$ 533Multiple Airlines

Tue, 8 Dec - Tue, 15 Dec

2:25 p.m. - 10:26 p.m.YYZ Toronto Pearson Intl-MCI Kansas City

9h 01m1 stop New York LaGuardia

6:30 a.m. - 11:28 a.m.MCI Kansas City-YYZ Toronto Pearson Intl

3h 58m1 stop Detroit Metropolitan Wayne County

C$ 794Delta

Tue, 29 Dec - Sat, 2 Jan

6:10 a.m. - 9:53 a.m.YYZ Toronto Pearson Intl-MCI Kansas City

4h 43m1 stop Detroit Metropolitan Wayne County

6:30 a.m. - 11:33 a.m.MCI Kansas City-YYZ Toronto Pearson Intl

4h 03m1 stop Detroit Metropolitan Wayne County

C$ 794Delta

Tue, 29 Dec - Tue, 5 Jan

4:30 p.m. - 10:59 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

7h 29m1 stop Chicago O'Hare Intl

5:25 a.m. - 2:03 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

7h 38m1 stop Chicago O'Hare Intl

C$ 798United Airlines

Tue, 8 Dec - Wed, 9 Dec

10:53 a.m. - 6:16 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

8h 23m1 stop Chicago O'Hare Intl

5:00 a.m. - 6:45 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

12h 45m1 stop Chicago O'Hare Intl

C$ 800United Airlines

Sat, 12 Dec - Tue, 5 Jan

6:00 a.m. - 11:10 a.m.YYZ Toronto Pearson Intl-MCI Kansas City

6h 10m1 stop Philadelphia

5:05 a.m. - 12:38 p.m.MCI Kansas City-YYZ Toronto Pearson Intl

6h 33m1 stop Chicago O'Hare Intl

C$ 831American Airlines

Wed, 30 Dec - Sun, 3 Jan

1:20 p.m. - 6:08 p.m.YYZ Toronto Pearson Intl-MCI Kansas City

5h 48m1 stop Chicago O'Hare Intl

9:22 a.m. - 2:44 p.m.MCI Kansas City-YYZ Toronto Pearson Intl

4h 22m1 stop Chicago O'Hare Intl

C$ 874American Airlines

Thu, 24 Dec - Fri, 1 Jan

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 897Air Canada

Thu, 3 Dec - Mon, 7 Dec

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 912Air Canada

Thu, 7 Jan - Mon, 11 Jan

Cheap last-minute flights

Enter your travel dates to find the best prices.

6:21 p.m. - 11:06 a.m.YYZ Toronto Pearson Intl-MCI Kansas City

17h 45m1 stop Chicago O'Hare Intl

7:10 a.m. - 11:59 p.m.MCI Kansas City-YYZ Toronto Pearson Intl

15h 49m1 stop Chicago O'Hare Intl

C$ 889British Airways

Mon, 16 Nov - Mon, 23 Nov

1:00 p.m. - 1:31 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

25h 31m2 stops Nashville Intl Jonesboro

6:05 p.m. - 2:10 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

19h 05m1 stop Orlando

C$ 952Multiple Airlines

Mon, 16 Nov - Mon, 23 Nov

6:15 a.m. - 1:31 p.m.YYZ Toronto Pearson Intl-MCI Kansas City

8h 16m1 stop Atlanta Hartsfield-Jackson

5:31 p.m. - 11:57 p.m.MCI Kansas City-YYZ Toronto Pearson Intl

5h 26m1 stop Atlanta Hartsfield-Jackson

C$ 1,012Delta

Sat, 14 Nov - Sat, 21 Nov

6:21 p.m. - 11:59 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

6h 38m1 stop Chicago O'Hare Intl

11:14 a.m. - 11:59 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

11h 45m1 stop Chicago O'Hare Intl

C$ 1,029Multiple Airlines

Mon, 16 Nov - Mon, 23 Nov

12:20 p.m. - 4:26 p.m.YYZ Toronto Pearson Intl-MCI Kansas City

5h 06m1 stop Atlanta Hartsfield-Jackson

5:31 p.m. - 11:57 p.m.MCI Kansas City-YYZ Toronto Pearson Intl

5h 26m1 stop Atlanta Hartsfield-Jackson

C$ 1,036Delta

Wed, 18 Nov - Thu, 19 Nov

7:14 a.m. - 5:25 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

11h 11m1 stop Miami

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 1,152Air Canada

Sat, 14 Nov - Mon, 16 Nov

5:55 p.m. - 10:58 p.m.YYZ Toronto Pearson Intl-COU Columbia Regional

6h 03m1 stop Chicago O'Hare Intl

3:00 p.m. - 8:32 a.m.COU Columbia Regional-YYZ Toronto Pearson Intl

16h 32m2 stops Chicago O'Hare Intl Washington, D.C. Reagan-National

C$ 1,175United Airlines

Mon, 16 Nov - Sat, 21 Nov

6:07 p.m. - 10:42 p.m.YYZ Toronto Pearson Intl-COU Columbia Regional

5h 35m1 stop Charlotte Douglas

6:32 a.m. - 12:35 p.m.COU Columbia Regional-YYZ Toronto Pearson Intl

5h 03m1 stop Chicago O'Hare Intl

C$ 1,197American Airlines

Mon, 16 Nov - Sat, 21 Nov

9:10 p.m. - 2:18 p.m.YYZ Toronto Pearson Intl-COU Columbia Regional

18h 08m2 stops Newark Chicago O'Hare Intl

3:00 p.m. - 8:32 a.m.COU Columbia Regional-YYZ Toronto Pearson Intl

16h 32m2 stops Chicago O'Hare Intl Washington, D.C. Reagan-National

C$ 1,219United Airlines

Mon, 16 Nov - Sat, 21 Nov

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 1,595Air Canada

Fri, 13 Nov - Mon, 23 Nov

Cheap direct flights

Enter your travel dates to find the best prices.

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 897Air Canada

Thu, 3 Dec - Mon, 7 Dec

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 912Air Canada

Thu, 7 Jan - Mon, 11 Jan

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 912Air Canada

Sat, 19 Dec - Mon, 4 Jan

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 912Air Canada

Wed, 9 Dec - Wed, 16 Dec

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 914Air Canada

Tue, 24 Nov - Sun, 29 Nov

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 1,049United Airlines

Thu, 3 Dec - Mon, 7 Dec

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 1,058United Airlines

Tue, 8 Dec - Tue, 15 Dec

6:45 p.m. - 7:54 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 09mdirect

2:40 p.m. - 5:38 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 58mdirect

C$ 1,140United Airlines

Wed, 5 May - Wed, 26 May

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 1,353United Airlines

Wed, 9 Dec - Wed, 16 Dec

2:10 p.m. - 3:26 p.m.YYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 16mdirect

4:05 p.m. - 7:05 p.m.STL Lambert-St Louis-YYZ Toronto Pearson Intl

2h 00mdirect

C$ 2,067Multiple Airlines

Fri, 27 Nov - Sun, 29 Nov

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United Airlines flights from Region of Ontario to Missouri

Our best United Airlines deals on Region of Ontario to Missouri flight tickets

United Airlines

8 Dec

YYZ4:30 p.m.Toronto Pearson Intl

7h 29m

1 stop

STL10:59 p.m.Lambert-St Louis

9 Dec

STL5:25 a.m.Lambert-St Louis

7h 38m

1 stop

YYZ2:03 p.m.Toronto Pearson Intl

C$ 798

United Airlines

12 Dec

YYZ10:30 a.m.Toronto Pearson Intl

11h 59m

2 stops

STL9:29 p.m.Lambert-St Louis

5 Jan

STL5:06 p.m.Lambert-St Louis

15h 41m

1 stop

YYZ9:47 a.m.Toronto Pearson Intl

C$ 800

United Airlines

8 Dec

YOW2:00 p.m.Ottawa

6h 30m

1 stop

STL7:30 p.m.Lambert-St Louis

9 Dec

STL5:25 a.m.Lambert-St Louis

7h 44m

1 stop

YOW2:09 p.m.Ottawa

C$ 847

American Airlines flights from Region of Ontario to Missouri

Our best American Airlines deals on Region of Ontario to Missouri flight tickets

American Airlines

9 Dec

YYZ11:36 a.m.Toronto Pearson Intl

9h 22m

1 stop

STL7:58 p.m.Lambert-St Louis

16 Dec

STL6:48 a.m.Lambert-St Louis

8h 42m

1 stop

YYZ4:30 p.m.Toronto Pearson Intl

C$ 651

American Airlines

19 Dec

YYZ1:18 p.m.Toronto Pearson Intl

11h 41m

1 stop

STL11:59 p.m.Lambert-St Louis

16 Jan

STL11:38 a.m.Lambert-St Louis

11h 06m

1 stop

YYZ11:44 p.m.Toronto Pearson Intl

C$ 674

American Airlines

1 Dec

YYZ11:45 a.m.Toronto Pearson Intl

9h 05m

1 stop

STL7:50 p.m.Lambert-St Louis

4 Dec

STL6:02 a.m.Lambert-St Louis

10h 41m

1 stop

YYZ5:43 p.m.Toronto Pearson Intl

C$ 678

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoKansas City

YYZ Toronto Pearson Intl - MCI Kansas City

YYZMCI

Toronto Pearson Intl

Mon 7/12

7:35 a.m.-3:59 p.m.

1 stop9h 24m

Kansas City

Mon 14/12

4:49 p.m.-3:20 p.m.

1 stop21h 31m

C$ 482

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 8/12

9:35 a.m.-12:12 a.m.

1 stop15h 37m

Lambert-St Louis

Tue 15/12

6:20 p.m.-1:40 p.m.

1 stop18h 20m

C$ 533

TorontoKansas City

YYZ Toronto Pearson Intl - MCI Kansas City

YYZMCI

Toronto Pearson Intl

Tue 29/12

2:25 p.m.-10:26 p.m.

1 stop9h 01m

Kansas City

Sat 2/1

6:30 a.m.-11:28 a.m.

1 stop3h 58m

C$ 794

TorontoKansas City

YYZ Toronto Pearson Intl - MCI Kansas City

YYZMCI

Toronto Pearson Intl

Tue 29/12

6:10 a.m.-9:53 a.m.

1 stop4h 43m

Kansas City

Tue 5/1

6:30 a.m.-11:33 a.m.

1 stop4h 03m

C$ 794

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 8/12

4:30 p.m.-10:59 p.m.

1 stop7h 29m

Lambert-St Louis

Wed 9/12

5:25 a.m.-2:03 p.m.

1 stop7h 38m

C$ 798

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 12/12

10:53 a.m.-6:16 p.m.

1 stop8h 23m

Lambert-St Louis

Tue 5/1

5:00 a.m.-6:45 p.m.

1 stop12h 45m

C$ 800

TorontoKansas City

YYZ Toronto Pearson Intl - MCI Kansas City

YYZMCI

Toronto Pearson Intl

Wed 30/12

6:00 a.m.-11:10 a.m.

1 stop6h 10m

Kansas City

Sun 3/1

5:05 a.m.-12:38 p.m.

1 stop6h 33m

C$ 831

TorontoKansas City

YYZ Toronto Pearson Intl - MCI Kansas City

YYZMCI

Toronto Pearson Intl

Thu 24/12

1:20 p.m.-6:08 p.m.

1 stop5h 48m

Kansas City

Fri 1/1

9:22 a.m.-2:44 p.m.

1 stop4h 22m

C$ 874

Quickest round-trip

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Thu 3/12

2:10 p.m.-3:26 p.m.

Nonstop2h 16m

Lambert-St Louis

Mon 7/12

4:05 p.m.-7:05 p.m.

Nonstop2h 00m

C$ 897

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Thu 7/1

2:10 p.m.-3:26 p.m.

Nonstop2h 16m

Lambert-St Louis

Mon 11/1

4:05 p.m.-7:05 p.m.

Nonstop2h 00m

C$ 912

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Region of Ontario to Missouri

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Missouri?

The month of January is, on average, the cheapest month to fly to Missouri from Region of Ontario, with most prices found around C$ 602. If you are unable to visit Missouri during the month of January, then departing from Region of Ontario during the month February is also very affordable. Most momondo users find prices during this month for around C$ 639.

What is the cheapest Ontario to Missouri flight route?

Fly from Toronto Pearson Intl to Lambert-St Louis for the best Ontario - Missouri flight prices

What cabin class options are available on Region of Ontario to Missouri flights?

There are 4 cabin classes available to choose from on Region of Ontario to Missouri flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Missouri flights?

You could potentially save up to 23% on your flight if you consider stops on a Region of Ontario to Missouri flight.

Cheap Region of Ontario to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Missouri

Best price found	C$ 338
Fastest flight time	2h 16m
Direct flights	Every day
Airports in Missouri	55 airports

The best one-way flight to Missouri from Region of Ontario in the past 72 hours is C$ 338. The best round-trip flight deal from Region of Ontario to Missouri found on momondo in the last 72 hours is C$ 482.

The fastest flight from Region of Ontario to Missouri takes 2h 16m

Direct flights go from Region of Ontario to Missouri every day.

There are 55 airports in Missouri. From Region of Ontario there are direct flights to Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from Ontario to Missouri

When did momondo last update prices for flights from Ontario to Missouri?
Prices for flights from Ontario to Missouri are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario to Missouri?
There are 5 operators available for flights from Ontario to Missouri as of November 2026.
How old do you have to be to fly from Ontario to Missouri?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Missouri.
What documentation or ID do you need to fly to Missouri?
The necessary travel and health documents for your Missouri trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Region of Ontario to Missouri?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Region of Ontario to Missouri is Canadair (Bombardier) Regional Jet 900 (49.21% of total bookings). The next most popular plane models are Embraer 175 (48.41%), Airbus A220-300 (1.59%), and Airbus A220 (0.79%).

Best airlines flying from Region of Ontario to Missouri

Compare and see reviews for airlines that fly from Region of Ontario to Missouri with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom C$ 364	Free Cancellation	Rating 7.3 10,485 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 419	Free Cancellation	Rating 7.1 11,891 reviews	Search Air Canada flights
Delta	PriceFrom C$ 575	Free Cancellation	Rating 7.8 8,712 reviews	Search Delta flights
WestJet	PriceFrom C$ 639	Free Cancellation	Rating 7.2 3,435 reviews	Search WestJet flights
American Airlines	PriceFrom C$ 647	Free Cancellation	Rating 7.0 12,233 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Missouri?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missouri from Ontario.

Can I find flights from Ontario to Missouri with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Missouri flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Missouri?

Once all potential Ontario to Missouri flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Missouri right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Missouri flights. All you need is a valid email address and we will do the rest; it is that quick and easy.